Commensalism with Other Predators: Red-tailed hawks sometimes take advantage of other predators' hunting efforts. When larger carnivores, like wolves or mountain lions, make a kill, red-tailed hawks may join the feast, scavenging on leftovers. This behavior enables red-tailed hawks to obtain food without expending as much energy on hunting.
Parasitism from Internal Parasites: Like many other birds, red-tailed hawks can be hosts to various internal parasites, such as roundworms, tapeworms, and coccidia. These parasites can negatively affect the health and fitness of red-tailed hawks, potentially reducing their lifespan or reproductive success.
Negative Symbiosis with Humans: Red-tailed hawks can occasionally come into conflict with human activities. Some farmers may perceive them as a threat to their poultry, leading to conflicts. However, it's important to note that red-tailed hawks primarily hunt small rodents, and their predation can be beneficial in controlling rodent populations.